[diverrick]

In California, ALL the refineries produce the same base gas fuel product, No matter what or where it is produced. It is all the same. By law.
If you load at a Chevron loading rack but it is going to a AM/PM store you just don't get the Chevron additive. Same loading racks. Just a different blend.
If your load is going to a Chevron store, then they blend in the secret mix. The low cost stores buy it where they can, But it is simply base fuel, without any additives.
What I do not know is how they deal with the etheynol issues. Do we all get that, no matter what? It is all very secret proprietary stuff no matter where your getting your gas. Or at least that's what they want you to beleive.